Leaky Indirect Coil

Joe Blanks

Hi all,
I had an indirect water heater installed with a new boiler. One day after it was installed, a leak occurred on an air vent at the end of a baseboard radiator and caused some water damage. I was told after a service man visited that he did some testing and determined that there was a pin-hole leak in the coil of the indirect water heater. He said caused the heating system to get city water pressure. He replaced the tank and no problems now. My question- shouldn't the relief valve on the boiler relieve the pressure at 30lbs. to prevent the system pressure from reaching city pressures?

Thanks,

Ted G

PSI

Well yes if the street pressure is over 30psi.

Paul Fredricks_9

He said the boiler got city pressure, but not that it reached city pressure (I may be wrong). It may be that the increased pressure came near 30, and the vent on the baseboard was on it's way out. I would check out the question of pressure though. If the tech found the boiler over 30 psi, he should have changed the relief.

FYI, if that was an automatic air vent, I've always kept the cap closed on auto air vents on baseboard radiators, just because they do leak from time to time. And who needs the mess.